根据php中的值更改数组顺序

Question

I have an array and I want change it's order. Following is an my array

        [1] => Array
                (
                    [A] => 25/02/2016
                    [B] => ZPO
                    [C] => 2
                    [D] => 3
                 )
        [2] =>array (
                    [A] => 25/02/2016
                    [B] => RTN
                    [C] => 2
                    [D] => 3
                )  
       [3] =>array (
                    [A] => 25/02/2016
                    [B] => ZPO
                    [C] => 2
                    [D] => 3
                )    

index [2] array should be come at last because it contains value [B] = RTN Means I want to reorder this array if [B] index contains value RTN should be come at last

Final output should be

  [1] => Array
                    (
                        [A] => 25/02/2016
                        [B] => ZPO
                        [C] => 2
                        [D] => 3
                     )
            [2] =>array (
                        [A] => 25/02/2016
                        [B] => ZPO
                        [C] => 2
                        [D] => 3
                    )  
           [3] =>array (
                        [A] => 25/02/2016
                        [B] => RTN
                        [C] => 2
                        [D] => 3
                    )    

Answer 1

Is this what your looking for?

foreach ($aArrayToSort as $iPos => $aArray) {
    if($aArray['B'] == 'RTN'){
        $aArrayToSort[] = $aArrayToSort[$iPos];
        unset($aArrayToSort[$iPos]);
    }
}